CooVox-U50 V2

The CooVox-U50 IP Phone System is an ideal solution for small and medium business with up to 100 extensions. Adopting the innovative modular design, it is very convenient to increase telephony ports to expand the system. CooVox-U50 supports industry standard SIP trunks, analog PSTN trunks (FXO Module), analog stations (FXS Module), and mobile GSM/WCDMA trunks (GSM/WCDMA Module).

CooVox-U50 is a next-generation Hybrid IP PBX System designed and optimized for today’s business telecommunication needs. CooVox-U50 is an affordable, scalable, interoperable, secure and reliable solution which provides not only traditional PBX features such as Automated Attendant and Voicemail, but also many advanced features including Remote Extensions, Remote Office Connection, Conference Bridge, Call Recording, Call Detail Records (CDR), Automatic Call Distribution (ACD), Unified Messaging (Voicemail to Email), Web Dial and many more features.

U50 Module U50 Slot
Slot1 Slot2



Call Features
Call Back
Call Forward
Call Group
Call Hold
Call Paging and Intercom
Call Park
Call Pickup
Call Queue
Call Recording
Call Routing
Blind Transfer
Attendant Transfer
Call Waiting
Caller ID
Dial by Name
Music On Hold/Transfer
3-Way Conference
Video Calls

PBX Features
Black List
BLF (Busy Lamp Field)
CDR (Call Detailed Record)
Conference Room (20 Rooms)
Call Monitoring
DID (Direct Inward Dialing Number)
DISA (Direct Inward System Access)
Distinctive Ringtone
DND (Do Not Disturb)
DNIS (Dialed Number Identification Service)
Feature Codes
FOP (Flash Operation Panel) Status Monitoring
Follow Me
IVR (Interactive Voice Responses)
Mobility Extension
Multi-Language Prompts
Multi-Language GUI 
One Touch Recording
Phone Book
Phone Provisioning
Pin Set
Record File Download
SIP Register with UDP/TCP/TLS
SIP Trunk 
Skype for SIP
Smart DID
Speed Dial
SRTP (Secure Realtime Transport Protocol)
T.38 Fax (Pass-through)
Time Based Rule
Fax to Email
WebRTC/ Web Dial 
Voicemail & Voicemail to Email

System Capacities
30 Concurrent Calls
Up to 100 IP Phone Registers/Extensions
Recording: 36,000 mins (.gsm); 4,000 mins (.wav)
Voicemail: 36,000 mins (.gsm); 4,000 mins (.wav)

Codecs & Protocols
Audio Codecs: G.722/G.711-Ulaw/G.711-Alaw/
Video Codecs: H.261/H.263/H.263+/H.264
Protocols: SIP (RFC3261)/IAX2

Network Features
DDNS Client
DHCP Server
IP Assignment (PPPoE/DHCP/Static)
SNMP v1/v2
Static Route Table
Trouble Shooting (Ping/Traceroute)
VPN Client (L2TP/PPTP/OpenVPN/N2N/IPSec)
VPN Server (L2TP/PPTP/OpenVPN/IPSec)

Security Features
Refuse SIP Register DoS
Refuse Abort Invite DoS
Refuse SSH Login DoS

Web Access Log
PBX Debug Log


Hardware Interfaces
1 Reset Button
1 Power Interface
2 Ethernet Interfaces 
1 Console Interface
1 USB Interface
Slot 1/2 for Analog/GSM/WCDMA Module

Hardware Specifications
Processor: Dualcore A7 1Ghz
Storage: 8GB SD Card
Power Supply: Input AC 100~240V, 50/60Hz;
Output DC 12V/2A

Working Temperature: 0 ~ 40°C
Storage Temperature: -20 ~ 55°C
Humidity: 5 ~ 95% Non-condensing

Applicable Modules




Inner box 410mm × 220mm × 85mm
G.W./unit 2.2 KG
Carton MEAS 530mm × 430mm × 240mm
Units per Carton 6 units/ CTN
G.W./CTN 13.5 KG/CTN


Name Version Size Release Date Download
CooVox-U50 V2 Datasheet (EN) V1.0 1.18 MB Jan. 20, 2016
CooVox-U50 V2 Datasheet (RU) V1.0 1.24 MB Feb. 26, 2016
CooVox-U50 V2 Datasheet (TR) V1.0 1.23 MB Mar. 15, 2016
CooVox-U50 V2 Datasheet (ES) V1.0 1.15 MB Apr. 13, 2016
CooVox-U50 V2 Datasheet (PT) V1.0 206.40 KB Apr. 28, 2016
CooVox-U50 V2 Datasheet (Persian) V1.0 3.33 MB Jun. 2, 2016
CooVox_U20_U50V2 _User_Manual(Admin) V2.1.4 3.80 MB Jun. 1, 2016
CooVox_V2_User_Manual(Ext.User) V2 V2.0 1.06 MB Jun. 1, 2016
WebRTC Manual V2.0 1.06 MB Jan. 28, 2016
Secure Your CooVox V2 IP Phone System V2.1.4 V2.1.4 892.20 KB Apr. 29, 2016
CooVox-U50 V2 QIG V1.0 899.03 KB Jan. 20, 2016
CooVox-U50 V2 Firmware V2.1.5 V2.1.5 5.69 MB Aug. 16, 2016
CooVox-U50 V2-WebRTC V1.0 4.96 MB Sep. 23, 2016
CooVox-U50 V2 Firmware V2.1.4 V2.1.4 2.36 MB May. 13, 2016
CooVox-U50 V2 Firmware V2.1.3 V2.1.3 1.32 MB Feb. 02, 2016